CN1241864C - Method for preparing moisture-resisting gypsum block - Google Patents
Method for preparing moisture-resisting gypsum block Download PDFInfo
- Publication number
- CN1241864C CN1241864C CNB021531749A CN02153174A CN1241864C CN 1241864 C CN1241864 C CN 1241864C CN B021531749 A CNB021531749 A CN B021531749A CN 02153174 A CN02153174 A CN 02153174A CN 1241864 C CN1241864 C CN 1241864C
- Authority
- CN
- China
- Prior art keywords
- gypsum block
- moistureproof
- water
- gypsum
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 57
- 239000010440 gypsum Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002893 slag Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 15
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 229910052934 alunite Inorganic materials 0.000 claims abstract description 6
- 239000010424 alunite Substances 0.000 claims abstract description 6
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 13
- 239000004571 lime Substances 0.000 claims description 13
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 12
- 239000011507 gypsum plaster Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000001238 wet grinding Methods 0.000 claims description 4
- 238000009837 dry grinding Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 150000004683 dihydrates Chemical class 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 229910001653 ettringite Inorganic materials 0.000 abstract description 2
- 239000005997 Calcium carbide Substances 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910001570 bauxite Inorganic materials 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 description 5
- 239000011449 brick Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a method for preparing moisture resisting gypsum building blocks. Raw materials mainly use calcined gypsum and blast furnace slag (can be replaced by milled fly ash and bauxite) as main raw materials, and calcium oxide or carbide slag and aluminum sulfate or alunite are doped for serving as excitant. Water is added and stirred, and the materials are cast for forming. The moisture resisting gypsum building blocks of the present invention can be obtained after demoulding and drying. By adopting the moisture resisting gypsum building blocks prepared by the method of the present invention, a part of non-hydraulicity dihydrate gypsum in the gypsum building blocks is crystallized and converted to hydraulicity ettringite, and the volume density of building blocks is enhanced. Thus, the present invention has good moisture resisting performance. Compared with the abroad traditional moisture resisting building block prepared by silicon oil dipping, the production cost is reduced, and the production technology is simplified. Because the moisture resisting gypsum building blocks of the present invention have 37% of water absorption rate, the surface of the building block is not hydrophobic; the building block is easily affixed with aqueous adhesive and plastering sand slurry, and the engineering construction quality can be ensured.
Description
Affiliated technical field
The present invention relates to a kind of preparation method of moistureproof gypsum block, specifically, relate to a kind of be applied to build in the preparation method of moistureproof gypsum block of non-bearing partition wall.
Background technology
The existing operative norm of China's gypsum block is JC/T698-1998, physical dimension: long 600mm or 666mm, wide 500mm, thick 80-150mm, and the edge has convex tenon and concave groove, uses a spot of building assembly glue just can directly build into non-bearing partition wall in the building by laying bricks or stones.
The production technique of traditional gypsum block is to be main raw material with the plaster of Paris, through adding water stirring, casting and demoulding drying, makes the gypsum block goods.Production technique is fairly simple, both can adopt the mode of mechanize moulding and continuous drying to produce in enormous quantities, also can adopt investment less manual assembly and the small serial production of seasoning mode.When batching is produced in gypsum block, because the water yield of mixing is big (the ratio of water to material value is generally 0.8-1), wherein sub-fraction water will be transformed into the crystal water of chemical combination attitude when the plaster of Paris aquation, and all the other most of water will be stored among the kapillary of gypsum block inside in the mode of free-water.When gypsum block evaporates this part free-water in drying process after, those empty kapillaries will still be retained among the internal structure of gypsum block.After construction wall was built in gypsum block by laying bricks or stones, when indoor humidity was big, automatically the water vapour in the absorbed air made it to condense into water, is filled in the kapillary, simultaneously to the indoor heat of condensation of emitting; When indoor humidity hour, the water in the kapillary can become water vapour by reevaporate again, to indoor release, simultaneously again can be from indoor absorption part vaporization heat.Gypsum block that Here it is has the what is called of automatic adjusting indoor air humidity and temperature and inhales the mechanism of exhaling air conditioning function.This also is the reason that gypsum block classifies as green structural material.Yet under the bigger Application in Building condition of humidity, this advantage of gypsum block intensive water absorbing properties can be transformed into fatal shortcoming again.We know that the main raw material plaster of Paris of preparation gypsum block does not belong to hydraulic cementing materials, thereby along with the gypsum block water-intake rate increases, intensity also will obviously reduce.After measuring dried gypsum block and in water, soak 24 hours according to us, water-intake rate is 55%, its coefficient of softening (promptly soak sample with do not soak the breaking load ratio of sample) is 0.36 only, and the coefficient of softening of product should not be not less than 0.6 index request when reaching the using of the existing operative norm JC/T689-1998 regulation of China's gypsum block under wet environment.Therefore, the gypsum block of handling without protection against the tide is not allow between bathe in the lavatory of humidity maximum under construction and use in the vault.
Generally all behind the gypsum block shaping and drying, adopt the method that silicone oil organic solution is flooded oven dry again to do moistureproof processing at present both at home and abroad.After this moistureproof the processing, because plastering no longer suction basically, nature can make its coefficient of softening reach requirement.But, when masonry panel, because through the moistureproof plastering surface hydrophobic of handling, do not adsorb for the caking agent and the motar of water-based, thereby cause the construction operation difficulty and influence construction quality.And this moistureproof gypsum block only its surface is moistureproof, in case damaged, its inside exposes out the problem with regard to still existing a large amount of suction intensity to reduce.In addition, this moistureproof cost of handling is also higher, and difficulty allows construction unit accept.
Summary of the invention
The purpose of this invention is to provide a kind of silicone oil and prepare the method for moistureproof gypsum block, and make no longer hydrophobic of block surfaces, be easy to adsorb, guarantee construction quality with the caking agent and the motar of water-based with inorganic raw material replacement costliness.
The preparation method who realizes moistureproof gypsum block of the present invention is:
With plaster of Paris and blast-furnace slag (available flyash and bauxitic clay replace) is main raw material, and mix lime or carbide slag, Tai-Ace S 150 or alunite as exciting agent, adding water stirs, casting is promptly made after the demoulding maintenance and is easy to and the moistureproof gypsum block of the caking agent of water-based and motar absorption.
Blast-furnace slag belongs to the sal raw material that contains CaO, both can adopt the dry grinding powder also can adopt the mode of wet-milling slip to prepare burden; Flyash and bauxitic clay belong to the sal raw material that does not contain CaO, are suitable for and adopt the mode of the wet-milling slip that mixes lime or carbide slag to prepare burden.The dry grinding powder of all sal raw materials and the grinding rate of wet-milling slip all should reach the 0.08mm square hole sieve and tail over and be not more than 7%.Simultaneously, requiring the grinding rate of lime, carbide slag, Tai-Ace S 150 and the alunite mix also should reach the 0.08mm square hole sieve tails over and is not more than 7%.Wherein lime, Tai-Ace S 150 and alunite all adopt the dry powder mode to prepare burden; Because carbide slag water ratio 20-30% only is suitable for the wet pulp mode and prepares burden.
The batching of moistureproof gypsum block of the present invention is prepared by following proportioning (weight %):
Plaster of Paris 60-75%, blast-furnace slag (available flyash and bauxitic clay replace) 15-35%; Lime or carbide slag 5-15%; Tai-Ace S 150 or alunite 1-5%; Ratio of water to material 0.7-1.
Example 1
Moistureproof gypsum block batching is prepared by following proportioning (weight %):
Plaster of Paris 63%; Blast-furnace slag 25%; Lime 10%; Tai-Ace S 150 2%; The ratio of water to material value is 0.8.
Example 2
Moistureproof gypsum block batching is prepared by following proportioning (weight %):
Plaster of Paris 63%; Flyash 10%; Bauxitic clay 10%; Carbide slag 15%; Tai-Ace S 150 2%; The ratio of water to material value is 0.8.
The moistureproof mechanism of moistureproof gypsum block of the present invention is: the dihydrate gypsum crystalline transition of a part of on-hydraulic becomes to have hydraulicity ettringite crystal in the first, the building block internal structure.The second, improve the volume density of building block, thereby suitably reduced the water-retaining capacity of building block.Measure according to us, common gypsum building block specific absorption is 55%, and moistureproof gypsum block water-intake rate of the present invention is 37% only, has reduced nearly 1/3rd.
Press the of the present invention moistureproof gypsum block of example 1 preparation, detect through building materials quality supervision and inspection station, Beijing, its breaking load is 3.1KN, and coefficient of softening is 0.8, and technical indicator all meets the moistureproof gypsum block standard of JC/T689-1998.
The preparation method of moistureproof gypsum block of the present invention compares the advantage that has with traditional silicone oil dip treating method:
The first, saved operations such as silicone oil dipping, oven dry in the technological process of production, and owing to adopted inorganic raw material to replace expensive silicone oil, production cost reduces.
The second, because moistureproof gypsum block surface hydrophobic no longer, in building wall, be easy to bondingly with aqueous adhesive and motar, guaranteed construction quality.
Three, owing to kept 37% water-intake rate, in the building use, still keep the respiratory function of common gypsum building block, thereby can be regarded as green structural material.
Four, since moistureproof gypsum block of the present invention be to make material itself partly be transformed into the hydraulicity from on-hydraulic, be consistent in the table of building block, even thereby the generation breakage also be unlikely to influence humidity resistance.
Embodiment
The embodiment that realizes moistureproof gypsum block of the present invention is: with plaster of Paris and blast-furnace slag is main raw material, and mixes lime and Tai-Ace S 150 as exciting agent, and batching is by following proportioning (weight %) preparation: plaster of Paris 63%; Blast-furnace slag 25%; Lime 10%; Tai-Ace S 150 2%; The ratio of water to material value is 0.8.Raw material prepares and adds water and stir, and casting is promptly made after the demoulding maintenance and is easy to and the caking agent of water-based and the moistureproof gypsum block of motar absorption.
Claims (5)
1, a kind of preparation method of moistureproof gypsum block, it is characterized in that: with plaster of Paris and blast-furnace slag is main raw material, and mix lime and Tai-Ace S 150 as exciting agent, add promptly to make after water stirring, casting, the demoulding maintenance and be easy to and the caking agent of water-based and the moistureproof gypsum block of motar absorption, moistureproof gypsum block batching is by following proportioning (weight %) preparation:
Plaster of Paris 60-75%; Blast-furnace slag 15-35%; Lime 5-15%; Tai-Ace S 150 1-5%; The ratio of water to material value is 0.7-1.
2, the preparation method of a kind of moistureproof gypsum block according to claim 1 is characterized in that: moistureproof gypsum block batching is prepared by following proportioning (weight %):
Plaster of Paris 63%; Blast-furnace slag 25%; Lime 10%; Tai-Ace S 150 2%; The ratio of water to material value is 0.8.
3, the preparation method of a kind of moistureproof gypsum block according to claim 1 is characterized in that: the blast-furnace slag in the batching replaces with flyash and bauxitic clay; The lime replacing carbide slag; Tai-Ace S 150 replaces with alunite.
4, the preparation method of a kind of moistureproof gypsum block according to claim 1, it is characterized in that: the lime in the moistureproof gypsum block raw material and Tai-Ace S 150 adopt the dry powder mode to prepare burden, and the fineness of the dry grinding powder of feed proportioning all reaches the 0.08mm square hole sieve and tails over and be not more than 7%.
5, the preparation method of a kind of moistureproof gypsum block according to claim 3, it is characterized in that: carbide slag in the moistureproof gypsum block raw material adopts the wet pulp mode to prepare burden, and the fineness of the wet-milling slip of feed proportioning all reaches the 0.08mm square hole sieve and tails over and be not more than 7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021531749A CN1241864C (en) | 2002-11-26 | 2002-11-26 | Method for preparing moisture-resisting gypsum block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021531749A CN1241864C (en) | 2002-11-26 | 2002-11-26 | Method for preparing moisture-resisting gypsum block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502582A CN1502582A (en) | 2004-06-09 |
| CN1241864C true CN1241864C (en) | 2006-02-15 |
Family
ID=34234993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021531749A Expired - Fee Related CN1241864C (en) | 2002-11-26 | 2002-11-26 | Method for preparing moisture-resisting gypsum block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1241864C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386510B (en) * | 2007-09-12 | 2012-02-29 | 陈泽远 | Full slag light heat insulating building materials |
| CN101913833A (en) * | 2010-08-06 | 2010-12-15 | 同济大学 | A kind of colored waterproof mortar for masonry decorative blocks |
| CN102180647A (en) * | 2011-01-28 | 2011-09-14 | 内蒙古科技大学 | Desulfurized building gypsum water-proof building block |
| CN108892467B (en) * | 2018-10-10 | 2021-03-16 | 河南理工大学 | Building material product prepared from building gypsum and carbide slag and method thereof |
| CN110304847B (en) * | 2019-04-11 | 2022-03-11 | 武汉理工大学 | A kind of wet grinding carbide slag activator and its preparation method and application |
-
2002
- 2002-11-26 CN CNB021531749A patent/CN1241864C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1502582A (en) | 2004-06-09 |
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